package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrResponseVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.service.AttrService;
import org.springframework.transaction.annotation.Transactional;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {

    @Autowired
    AttrAttrgroupRelationDao attrAttrgroupRelationDao;

    @Autowired
    AttrGroupDao attrGroupDao;

    @Autowired
    CategoryDao categoryDao;

    @Autowired
    CategoryService categoryService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        LambdaQueryWrapper<AttrEntity> lambdaQueryWrapper = new QueryWrapper<AttrEntity>().lambda();

        if (catelogId != 0) {
            lambdaQueryWrapper.eq(AttrEntity::getCatelogId, catelogId);
        }
        lambdaQueryWrapper.eq(AttrEntity::getAttrType,
                "base".equalsIgnoreCase(type) ?
                        ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()
                        : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());

        String key = (String) params.get("key");
        if (StringUtils.isNotEmpty(key)) {
            lambdaQueryWrapper.and(attrEntityLambdaQueryWrapper -> {
                attrEntityLambdaQueryWrapper.eq(AttrEntity::getAttrId, key)
                        .or().like(AttrEntity::getAttrName, key);
            });
        }

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                lambdaQueryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrResponseVo> responseVoList = records.stream().map(attrEntity -> {
            AttrResponseVo attrResponseVo = new AttrResponseVo();
            BeanUtils.copyProperties(attrEntity, attrResponseVo);
            //1、设置分类分组的名字
            if ("base".equalsIgnoreCase(type)) {
                AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = attrAttrgroupRelationDao
                        .selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                                .lambda().eq(AttrAttrgroupRelationEntity::getAttrId, attrEntity.getAttrId()));
                if (attrAttrgroupRelationEntity != null && attrAttrgroupRelationEntity.getAttrGroupId() != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao
                            .selectById(attrAttrgroupRelationEntity.getAttrGroupId());
                    attrResponseVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }

            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrResponseVo.setCatelogName(categoryEntity.getName());
            }
            return attrResponseVo;
        }).collect(Collectors.toList());
        pageUtils.setList(responseVoList);
        return pageUtils;
    }

    @Cacheable(value = "attr",key = "'attrinfo'+#root.args[0]")
    @Override
    public AttrResponseVo getAttrInfo(Long attrId) {
        AttrEntity attrEntity = this.getById(attrId);
        AttrResponseVo attrResponseVo = new AttrResponseVo();
        BeanUtils.copyProperties(attrEntity, attrResponseVo);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            //设置分组信息
            AttrAttrgroupRelationEntity relationEntity = attrAttrgroupRelationDao
                    .selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                            .eq("attr_id", attrId));
            if (relationEntity != null) {
                attrResponseVo.setAttrGroupId(relationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                if (attrGroupEntity != null) {
                    attrResponseVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }

        //设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        attrResponseVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            attrResponseVo.setCatelogName(categoryEntity.getName());
        }
        return attrResponseVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        this.updateById(attrEntity);
        if (attrEntity.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()) {
            AttrAttrgroupRelationEntity attrAttrgroupRelationEntity = new AttrAttrgroupRelationEntity();
            attrAttrgroupRelationEntity.setAttrGroupId(attr.getAttrGroupId());

            Integer count = attrAttrgroupRelationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>()
                    .eq("attr_id", attr.getAttrId()));
            if (count > 0) {
                //修改分组关联
                attrAttrgroupRelationDao.update(attrAttrgroupRelationEntity,
                        new UpdateWrapper<AttrAttrgroupRelationEntity>()
                                .eq("attr_id", attr.getAttrId()));
            } else {
                attrAttrgroupRelationEntity.setAttrId(attr.getAttrId());
                attrAttrgroupRelationEntity.setAttrSort(0);
                attrAttrgroupRelationDao.insert(attrAttrgroupRelationEntity);
            }
        }
    }

    /**
     * 根据分组id查找关联的所有属性
     *
     * @param attrgroupId
     * @return
     */
    @Transactional
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId, Integer attrType) {
        List<AttrAttrgroupRelationEntity> attrAttrgroupRelationEntityList =
                attrAttrgroupRelationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>()
                        .eq("attr_group_id", attrgroupId));
        List<Long> attrIds = attrAttrgroupRelationEntityList.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());
        if (attrIds == null || attrIds.size() == 0) {
            return null;
        }
        List<AttrEntity> attrEntities = this.listByIds(attrIds);
        if (attrType != ProductConstant.AttrEnum.ATTR_TYPE_ALL.getCode()) {
            attrEntities = attrEntities.stream()
                    .filter(item -> item.getAttrType() == attrType)
                    .collect(Collectors.toList());
        }
        return attrEntities;
    }

    /**
     * 获取分组没有关联的所有属性
     *
     * @param params
     * @param attrgroupId
     * @return
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1.当前分组只能关联自己所属分类的所有属性
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();
        //2.当前分组只能关联别的分组没有引用的属性


        //1).通过分类id查找属于自己分类下的所有属性
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>()
                .eq("catelog_id", catelogId)
                .eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
        String key = (String) params.get("key");
        if (StringUtils.isNotEmpty(key)) {
            queryWrapper.and(wrapper -> {
                wrapper.eq("attr_id", key).or().like("attr_name", key);
            });
        }
        List<AttrEntity> attrEntities = this.list(queryWrapper);

        //2).然后再通过找到的属性集合的attrId去属性组和属性关联关系表中找，如果有，则把这个attrId对应的属性剔除
        List<AttrEntity> attrEntityList = attrEntities.stream().filter(item -> {
            AttrAttrgroupRelationEntity entity = attrAttrgroupRelationDao
                    .selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>()
                            .eq("attr_id", item.getAttrId()));
            return entity == null;
        }).collect(Collectors.toList());


//        //2.1)、当前分类下的分组
//        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>()
//                .eq("catelog_id", catelogId));
//        //2.2)、这些分组关联的属性
//        List<Long> collect = group.stream().map(item -> {
//            return item.getAttrGroupId();
//        }).collect(Collectors.toList());
//        List<AttrAttrgroupRelationEntity> groupId = attrAttrgroupRelationDao
//                .selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", collect));
//        List<Long> attrIds = groupId.stream().map(item -> {
//            return item.getAttrId();
//        }).collect(Collectors.toList());
//
//        //2.3)、从当前分类的所有属性中剔除这些属性
//        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>()
//                .eq("catelog_id", catelogId)
//                .eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode());
//        if (attrIds != null && attrIds.size() > 0) {
//            queryWrapper.notIn("attr_id", attrIds);
//        }

//        String key = (String) params.get("key");
//        if (StringUtils.isNotEmpty(key)) {
//            queryWrapper.and(wrapper -> {
//                wrapper.eq("attr_id", key).or().like("attr_name", key);
//            });
//        }
//        IPage<AttrEntity> page = this.page(
//                new Query<AttrEntity>().getPage(params),
//                queryWrapper
//        );

        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params)
        );
        PageUtils pageUtils = new PageUtils(page);
        pageUtils.setList(attrEntityList);
        return pageUtils;
    }

    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        return this.baseMapper.selectSearchAttrIds(attrIds);
    }


    @Transactional
    @Override
    public void saveAttr(AttrVo attr) {
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        //保存基本数据
        this.save(attrEntity);
        //2.保存关联关系
        if (attr.getAttrType() == ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() && attr.getAttrGroupId() != null) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attrEntity.getAttrId());
            relationEntity.setAttrSort(0);
            attrAttrgroupRelationDao.insert(relationEntity);
        }
    }


}